Algebraic Addition/Subtraction
2x+5x=?
7x
2x*8x=?
16x2
Area of a square with a side of x?
x*x=x2
5x=80
x=16
52=
A number 38 less than e2
e2-38
5(y+x)=?
5y+5x
Perimeter of a square with sides of 20x.
20x*4=80x
5-x=83
x=-78
1/5 in percents
20%
3 for n
10-5n+5n
0
(3-x)(4+x)=?
12-x2-x
Area of a rectangle with sides of 2x and 4y.
2x2+16y2
x-7+4=6
x=9
5/8*4/3*8/7=?
20/21
The sum of 30 and b, multiplied by 2.
2(30+b)
Shelly ate x cookies in 7 days. If continues to eat, how many cookies will she eat in:
a)month
b)2 months
a)7x*4
b)7x*8
The volume of a rectanglar block with sides of:
a,b and c ->all in cm
abc cm3
8-12x+6x=14
x=4
3 2/3 : 5/8=?
5 13/15
The squared difference between 83 and e.
(83-e)2
5(-2+b)-4(8+x)=?
=(-43)-4x+5b
The volume of a rectangular block with sides of:
20cm,5cm and 2cm
200cm3
5x+20=100
x=8
The name of the sign below?
√
radical